Quanta Computer Incorporated

Sheng-Feng Chen

Jung-Wen Chang

Lin-Wei Huang

A one-direction conduction device includes a first transistor and a driving circuit. The first transistor has a control terminal coupled to a first node, and input and output terminals respectively coupled to input and output electrode terminals of the one-direction conduction device. In the driving circuit, a switch circuit is coupled to the input electrode terminal and a second node. A second transistor has a base and a collector both coupled to a third node, and an emitter coupled to the second node. A first resistor is coupled to the third node and ground. A third transistor has a base coupled to the third node, an emitter coupled to the output electrode terminal, and a collector coupled to the first node. The second resistor is coupled between the first node and the ground. The switch circuit breaks off a reverse leakage current path of the one-direction conduction device.

One-direction conduction devices

An object gripping device using a electromagnetic assembly includes a base having two opposite ends thereof, a fastening portion pivoted at one end of the base and having an object-gripping trench and a through opening having a stopping surface therein at two opposite ends of the fastening portion, a transmission portion pivoted at the other end of the base, a stopping shaft extending through both the transmission portion and the through opening, a first spring connected both the base and the fastening portion, a second spring connected both the base and the transmission portion, and a electromagnetic assembly connected the base and the transmission portion.

Object gripping device using electromagnetic assembly

A temperature control system used in a portable computer comprises a first control part, a second control part connected to an operation processing unit (OPU), a third control part and a fourth control part connected to a charge part. The first control part outputs a first control signal for responding the temperature and load current changes of an external power transformer. The third control part outputs a second control signal for responding the temperature and load current changes of a battery. When the portable computer is powered by the external transformer, the second control part receives the first control signal to control the OPU, and the fourth control part controls the charge current of the charge part. When the portable computer is powered by the battery, the second control part receives the second control signal to control the OPU.

System for controlling an operation state of a portable computer based on detected temperature of an external transformer

A power supply device providing required power to a loading device. The power supply device includes a battery, an adjustable power converter and a control circuit. The battery, having a current meter, selectively outputs required power to the loading device. The power converter receives and converts an AC voltage into a first DC voltage or a second DC voltage, further receives an adjusting signal. The power converter outputs the second DC voltage when the adjusting signal is enabled. The magnitude of the second DC voltage is lower than the output voltage of the battery. The control circuit is coupled to the battery and the power converter. When the power of the battery is gauged, the control circuit enables the adjusting signal for the power converter to output the second DC voltage, so that the battery discharges the loading device for the current meter to re-gauge the power of the battery.

Power supply device

A driving apparatus includes a DC-to-DC converter, a first LED series, a second LED series, a first constant-current circuit, a second constant-current circuit, and a feedback circuit. The DC-to-DC converter respectively outputs a direct-current voltage to one terminal of the first and the second LED series to generate a first potential and a second potential at the other terminal of the first and the second LED series according to a feedback voltage. The first and the second constant-current circuits are respectively coupled to the other terminal of the first and the second LED series and output a first current and a second current for driving the first and the second LED series according to a first and a second control signals. The feedback circuit uses the lower one of the first potential and the second potential as a feedback voltage.

Light emitted diode driving apparatus

A connector set of notebook computer is provided. The connector set includes a power supply connector, a host connector, a battery connector and a battery recess connector. The host connector is fixed on the notebook computer and electrically connected to the power supply connector. The battery connector is removably disposed on the notebook computer. The battery recess connector is fixed in a battery recess of the notebook computer. The battery connector is capable of being electrically connected to both battery recess connector and the power supply connector. That is, the battery connector of the invention is selectively connected to the battery recess connector or the power supply connector. Thus, the battery may be charged when disposed in the computer recess or alternatively may be removed from the computer recess and charged directly through the power supply connector.

Connector set of notebook computer

A one way conductor includes a MOSFET and a driving device. The MOSFET has a source and a drain respectively serving a positive end P and a negative end N of the one way conductor. The driving device including a BJT differential amplifier detects a voltage difference between the source and the drain of the MOSFET. When the voltage of the positive end P is higher than the voltage of the negative end N, the driving device outputs a driving voltage to a gate of the MOSFET to turn on the MOSFET. If the voltage of the positive end P is lower than the voltage of the negative end N, the driving device cannot output the driving voltage for turning on the MOSFET, and the one way conductor is turned off at this time. Consequently, the one way conductor of the invention has the one way conductive property.

One way conductor

An electronic apparatus capable of effectively using power of an AC/DC adaptor including a host and an AC/DC adaptor is provided. The AC/DC adaptor is used for receiving an AC power and converting it into a DC power for the host. At the same time, the AC/DC adaptor outputs a controlling signal to control the power consumption of the host according to the power output at that time. The AC/DC adaptor includes a switching power converter for converting the AC power into the DC power, and a power supply controller for outputting a controlling signal according to the power output by the switching power converter.

Electronic apparatus capable of effectively using power of an AC/DC adaptor

A voltage balancing device is to be used in a dc power supplying system which includes first and second power supplying units that are connected in series to supply power concurrently operate an electrical load. The first power supplying unit has a negative terminal and a positive terminal to be connected to the electrical load. The second power supplying unit has a positive terminal connected to the negative terminal of the first power supplying unit, and a negative terminal to be connected to a ground. The voltage balancing device includes a reference voltage generating unit connected in parallel to the power supplying system and having an output that provides a reference voltage, and a comparator unit having a first input port connected to the output of the reference voltage generating unit, a second input port connected to a junction of the first and second power supplying units of the power supplying system so as to receive a detected voltage therefrom, and an output port connected to the second input port.

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Taipei Shien, Taiwan

Sheng-Feng Chen